ce 331, fall 2002 joist and frame design example...

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CE 331, Fall 2002 Joist and Frame Design Example 1 / Design the 2 nd Floor framing using steel wide flanges for the joists, girders and columns and steel angles for the x-bracing. Plan View 6’ 2 1 E D C B A joist slab 40’ 20’ 15’ girder Roof 2 nd Floor Ground 15’ 12Elevation of South Side 8’ 2 nd Story: Wood Frame Apartments 1 st Story: Steel Frame (used for parking) Joist-to-Girder Connections are pin connections Girder-to-Column Connections are moment connections N 15’ 15’ 20’ 20’ 10’ Typ. 15’ Fy = 50 ksi 2 nd Floor: DL = 4” normal wt. concrete slab + 15 psf for weight of apartments LL = 40 psf Roof: DL = 18 psf LL = 20 psf WL = 15 psf 9’ Elevation of North Side Elevation of East Side

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CE 331, Fall 2002 Joist and Frame Design Example 1 /

Design the 2nd Floor framing using steel wide flanges for the joists, girders and columns and steel angles for the x-bracing.

2

1

E CB

joist slab

40’

20’ 15’

girder

2nd Story: Wood FrameApartments

1st Story: Steel Frame (used for parking)

Joist-to-Girder Connections are pin connections

Girder-to-Column Connections are moment connections

Fy = 50 ksi

2nd Floor: • DL = 4” normal wt. concrete slab

+ 15 psf for weight of apartments • LL = 40 psf

Roof: • DL = 18 psf • LL = 20 psf

WL = 15 psf

Elevation of East Side

A

15’

Pl

Elevation

20’

Elevatio

an View

of South

20’

n of North

D

Side

15’

Side

N10’ Typ.

6’

Roof

2nd Floor

Ground

15’

12’

8’

15’

9’